How Do You Know Your Blood Type Without Testing

March 18, 2021

A person may be able to use a saliva sample to test for their blood type as some people produce the characteristic antigens. A person can purchase a home testing kit online.

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Blood typing is also done prior to donating blood.

How do you know your blood type without testing. If you only know your parents blood types you can draw a punnett square to predict the probability of inheriting each one. Look for a local blood donation center and enter in. The dominant alleles i a and i b and the recessive allele i.

If your blood type is a your phenotype is either i a i a or i a i. Look for blood calculator online. Usually lab tests and birth certificates list the blood type of the individual.

If you ve donated in the past you may be able to check your blood type on their website. Three alleles determine blood type. The best way to find out your father s blood type without a test is to look through his past medical records.

If your father has ever donated blood it is possible that his blood type may have been determined at. Then ask the staff to have the tests done in order to know your blood type and then you can have donated too. Yet another answer for the question of how to know your blood type can be when you donate your blood to someone or for a cause.

Last medically reviewed on. If you re in the category of people who secrete blood group antigens in other body fluids you may be able to find out your blood type without having blood drawn. If your blood type is o you have an ii genotype.

Saliva test for those squeamish of needles a saliva test can help you determine your blood type without. Were you to go to the hospital and need a blood transfusion your blood type would be tested anyway. Knowing your blood type really isn t all that urgent with the exception of the most dire situations where you need blood without being able to get to a hospital in time.

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